Valve arrangement



Nov. 2, 1943. G. B. WARREN VALVE ARRANGEMENT Filed April 4, 1942Inventor:

,252; BWaren, b y 7 M His Attorney from the chamber kis '156th passage26 ioxf the Stemgum in closed position, it is `possible toprovide for awhereby itproiects able A arrangement with'a fluid sealingjineansffo'rcon? A Letters Patent pf the United statesis: t

certain valve stroke a much shorter vbellows and therefore a morecompact construction than limited-by a yieldable stop ,43 which has vastem 44 projecting through the end plate Il,r and bi- I asedr downwardby a compression spring 45' en? gaging a nut 46 screwedto anjupperend-por.-.

of the, valve non. l v. Y

The flow of solid matter into the valve sten/1V clearance A35 inthepresent arrangementis further preventedekbytheprovision of meansforestablishing a counterflow'infsaid clearance or for setting p thereinafpressure'equalto'or slightly iiigiirj than't'iiep'rsgsvurej in thehamper 115.1 In, vthe present .,texample, in which thevalve`is1in-4having a bore and forming two chambers and aV tion ofthe'stem 44. The`stop '43'limits\ upward movement of the valve and also reducesvibration member when fullyppen posil, Y 1

ltherewith permitting movement of the stem out affecting the bellows.

trically surrounding a portion ofthe stem in one of the chambers, meanssecuring one end of the bellows to the casing and a disk with a central.bore secured tothe other end of the-bellows and loosely engagingthe"sternl to dene a sliding t with- `2. Valve arrangement comprising avcasing valve seat ybetween-the chambers, a movable to reduce accessofsolid matter from the cham- 1 bers into the clearance between the boreand the stem-,without affecting movement of the stem, v said meanscomprising a bellows concentrically nsurrounding; a. portinlof the sternin one of the chambers and having one'end secured to the casingand a-ring`secured to the.V other lendof the .bellows andhavingan inner edgereduced in tended for use iicvomiectiopn with'lasteam'tur- Y bine,vmeansjare`provided(for:'conducting saturatedfsteam to the clearance"35.1Thisf means 'comprises a tanlftor. reservoir 'ltforffcontaining Ywater T563@ A Superheatedsteam 'is conducted to," the 4,reservoir '4T bya ,conduit 49 which hasan coutlvtwlrcted' belOW the 4level bf' thpwate48 whereby the superheated steam is Vdesup'erlfieated andr solid matterVcontained in the A steam, is rel 'tairiegiiri the bodylor water 54s.@ 'esaturatedsteam lisdiscliarged from the tankrdl'lthrough a conduitsofanjdvcoriiuctedto an iritermeqiatepoint of the pipesl ariathe'discnarge .pf waterfrm ,the tant;

, clearance 35.* Thetank' M'has anoutlet or drain may I,beautomatically" lcontrolled ,by ,means in?.

cluding a valve .52.'actuated by 11a float'l VSlt'ezvirn and'water mayvbe discharged from the'tlower end to the hvalve stem; the loose'sealing' arrange,-

ment haswa close sealing t with the. stemjw'ithoutbeing jfiised thereto;thus' .rermttirigifen@ tive movement between the stem anydlther sealing'means. jrnqugh not essential, it'mayrb desir:

" insome instances to combine` the' bellows space inventionIhave'pfovided an impro d, construction and arrangementof valvesthickness and kfor11ninga` close clearance with the'stemand-per'mittingmovement ',of l the stem withoutairectiiig .thebeuws f 3... Valvearrangement comprising a casing hav'- 'ing a borearid iforming'twochambers and a valve seat between them, a movable valvemembercooperatively associated .with the seat, astem connected tol Vthe valvemember and projecting througli'the bore,andf`means loosely sealing thestem tothe inner ndfofv thc-'llibre to reduce ac- Cesslo'f solid matterfrom the chambers into the clearan ce4 between vthe bore4 and,V the'stem'without affecting m'ovementfof Ythe stern, said means comprising'a; ',bellowsl 4concehtri'cally surrounding `'a portion f the Ysteiniiione of the' chambers', means securing one end ,"fof the' bellows `to'the casing and airing sealedto theotherend ofl the bellows and'lhavingan'kinner knife edge shaped portion in loosesealingcontactwiththe stemand permitting movement of the stem without aiecting the bellows.

connected 'to the valve member and looselyprojecting" jthi'ough thebore, and means to' reduce ac`cessofjsold matter from the,- chambersinto the `clearance 'between Vthe Ybore and the stem 5-v/ithoutiaiectingp movementjof thelatter, said means'ggcomprising .abellows lconcentrically surroundingajportion ofthe stem in one "of thechambers, means securing .one 4end'of thebellows to theca'singfothermeans secured .to thebth'er end of, theA bellows and forming. a close'cleare,` ancewith the'stem and permitting; movement my invention,ltogether with the apparatus which I now considerlto represent'the'best'embodiment thereof, I desire to-haveitmunderstoo t* apparatus shown isonly illustrative and hat. the

"inventionfmay bevcarried out 4byv*othe?"mean-sl e What I claim as newandd'esiredto steourlet-byv 5,1; Valve arrangement comprising acasinghav-` that" the v ing abore and' forming two chambersand a valvevY @seaty betweenpthe chambersb a movable valve into the clearancefermedbetween; 'elabore ad the )stem Without, stem, saidmeans comprising a anannular projection secured to theI casing .and

concentrically surrounding the-stem .withinth'e' bellows-togprevent,thelatter'irom collapsing.

" the clearance'between"thebore andthe stem,

said means comprisinga'bellowslrconcentrically surroundings; portionpfthev stemlin'onejof the;

chambers, means securing'. one endofthe bellows to thejjcasingiand .aringsecured tothleother end` of l rthe bellows and :having loose*sealing contact with thestemythestemfhaving a shoulder with partialopening ofthe valve.

ln the bellows and'spaced from lthe ringin closed position of the valvean'd engaging the ring uponv y 6. Valve arrangement comprising 'a casinghaving a bore and forming a chamber and a valve y seat, a bushingprojecting through thebore' into' the chamber, amovable valve membercoopera-y tively associated'with these'at, a stem connected l to thevalveV member vand` loosely projecting through the bushing, and means toreduce vaccess of solid'matter from" the chamber into the clearance`formed between the bushing'andthe to fluid flowthroug'h theA chambers;A 9. Valve arrangement comprising a casing hav-f stem without affectingthefmovement of the stem,

said means comprisingI a bellows concentrically surrounding theprojection of the bushing, means sealing one end of the bellows' to`the. bushing, a ring secured to the other end ofthebellows and. I

having an inner edge in loose sealing engage- 'ing abore and forming twochambers and a'valvev seat between them, abushing projecting through thebore into one of thechambers, a movablefvalve y memberceoperativelyassociated with the seat-a ment with the stem,` and means on thestern.;`

within the bushing for engaging the ring 'upon partial opening of thevalve. y

7. Valve arrangement comprising-a casinghaving a bore and forming twochambers and a valve seat between them,l a bushing projecting throughthe bore into one ofthe chambers, a movable valve member cooperativelyassociated withthe seat, a Astem connected tothe valve member andloosely projecting throughl the bushing, and means loosely sealing thestem to the casing near the inner end of the bushing, said meanscomprising a bellows concentrically surrounding the projection of thebushing, means sealing one end' ofthe bellows to the bushing and a ringsecured to the other end of the bellows and having an inner knife edgeshaped portion in loose sealing engagement with the stem, the stemhaving a conical shoulder spaced fromvthe ring in closed position of thevalve and engaging the ringv upon partial opening of the valve.

8. Valve arrangement comprising a casing hav--y ing a bore and formingtwo chambers and a valve of thebushing, means sealing one end ofthekstem connected to the valve member and pro' jecting through the`bushing, and means to reduceaccess of solid matter fromfthe chambersinto the bushing, 'said means comprising a .be1'

lows co'ncentr'icallyl surrounding the projection bellows to thebushing, a ring securedto `the otherend of the bellows and, having an`inner knifeL edge shaped portion in loose ysealing engagement 1 withthe stem, the stem, having.a conical shoulder spaced from said `ring inclosed Vpositionv ofthe valve and engaging the ring uponiopening of thevalve, a yieldable stop supported on the casing for engaging thefvalvemember in open position to reduce vibration due to fluid ilow throughthe chambers, and means connected tothe bushA` king'to circulate uidunderpressure through the annular clearance between the bushing and theI stem.-

'10. Valvel arrangement comprising a 'casing' having a bore andy formingtwo chamberswith a valveseat between them, a movable valve membercooperatively associated with the seat, a stem seat between them, abushing projecting through K the bore into one of the chambers, amovable valve member cooperatively associated with the seat, a stemconnected to the valve member and",v loosely projecting through thebushing, and

means to reduce access of solid matter from the chambers into thebushing, said means comprislng a bellows concentric-,ally surroundingthe pro-` connectedtothe valve member yand projecting `through the bore,means to reduce-access of solid matter from vthe chambers into theclearancebetween the bore andthe stem, said means. comy prising a membersecurelysealedto the casing and forming a seat vsurrounding thegstem,said stem having a shoulderjfor engaging the seat in the open positiononly of the valve, and a flexible 4 v valve in its open position.

stop for engaging the l AGLENN B. lll/ Al'rxtliiEN.`

